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<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="List of all items in this crate"><meta name="keywords" content="rust, rustlang, rust-lang"><title>List of all items in this crate</title><link rel="preload" as="font" type="font/woff2" crossorigin href="../SourceSerif4-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../FiraSans-Regular.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../FiraSans-Medium.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../SourceCodePro-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../SourceSerif4-Bold.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../SourceCodePro-Semibold.ttf.woff2"><link rel="stylesheet" type="text/css" href="../normalize.css"><link rel="stylesheet" type="text/css" href="../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" type="text/css" href="../ayu.css" disabled><link rel="stylesheet" type="text/css" href="../dark.css" disabled><link rel="stylesheet" type="text/css" href="../light.css" id="themeStyle"><script id="default-settings" ></script><script src="../storage.js"></script><script defer src="../main.js"></script><noscript><link rel="stylesheet" href="../noscript.css"></noscript><link rel="alternate icon" type="image/png" href="../favicon-16x16.png"><link rel="alternate icon" type="image/png" href="../favicon-32x32.png"><link rel="icon" type="image/svg+xml" href="../favicon.svg"></head><body class="rustdoc mod"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="mobile-topbar"><button class="sidebar-menu-toggle">&#9776;</button><a class="sidebar-logo" href="../lazy_static/index.html"><div class="logo-container"><img class="rust-logo" src="../rust-logo.svg" alt="logo"></div></a><h2 class="location"></h2></nav><nav class="sidebar"><a class="sidebar-logo" href="../lazy_static/index.html"><div class="logo-container"><img class="rust-logo" src="../rust-logo.svg" alt="logo"></div></a><h2 class="location">Crate lazy_static</h2></nav><main><div class="width-limiter"><div class="sub-container"><a class="sub-logo-container" href="../lazy_static/index.html"><img class="rust-logo" src="../rust-logo.svg" alt="logo"></a><nav class="sub"><form class="search-form"><div class="search-container"><span></span><input class="search-input" name="search" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"><div id="help-button" title="help" tabindex="-1"><button type="button">?</button></div><div id="settings-menu" tabindex="-1"><a href="../settings.html" title="settings"><img width="22" height="22" alt="Change settings" src="../wheel.svg"></a></div></div></form></nav></div><section id="main-content" class="content"><h1 class="fqn"><span class="in-band">List of all items</span></h1><h3 id="Traits">Traits</h3><ul class="traits docblock"><li><a href="trait.LazyStatic.html">LazyStatic</a></li></ul><h3 id="Macros">Macros</h3><ul class="macros docblock"><li><a href="macro.lazy_static.html">lazy_static</a></li></ul><h3 id="Functions">Functions</h3><ul class="functions docblock"><li><a href="fn.initialize.html">initialize</a></li></ul></section></div></main><div id="rustdoc-vars" data-root-path="../" data-current-crate="lazy_static" data-themes="ayu,dark,light" data-resource-suffix="" data-rustdoc-version="1.64.0 (a55dd71d5 2022-09-19)" ></div></body></html>

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<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="Takes a shared reference to a lazy static and initializes it if it has not been already."><meta name="keywords" content="rust, rustlang, rust-lang, initialize"><title>initialize in lazy_static - Rust</title><link rel="preload" as="font" type="font/woff2" crossorigin href="../SourceSerif4-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../FiraSans-Regular.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../FiraSans-Medium.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../SourceCodePro-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../SourceSerif4-Bold.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../SourceCodePro-Semibold.ttf.woff2"><link rel="stylesheet" type="text/css" href="../normalize.css"><link rel="stylesheet" type="text/css" href="../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" type="text/css" href="../ayu.css" disabled><link rel="stylesheet" type="text/css" href="../dark.css" disabled><link rel="stylesheet" type="text/css" href="../light.css" id="themeStyle"><script id="default-settings" ></script><script src="../storage.js"></script><script defer src="sidebar-items.js"></script><script defer src="../main.js"></script><noscript><link rel="stylesheet" href="../noscript.css"></noscript><link rel="alternate icon" type="image/png" href="../favicon-16x16.png"><link rel="alternate icon" type="image/png" href="../favicon-32x32.png"><link rel="icon" type="image/svg+xml" href="../favicon.svg"></head><body class="rustdoc fn"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="mobile-topbar"><button class="sidebar-menu-toggle">&#9776;</button><a class="sidebar-logo" href="../lazy_static/index.html"><div class="logo-container"><img class="rust-logo" src="../rust-logo.svg" alt="logo"></div></a><h2 class="location"></h2></nav><nav class="sidebar"><a class="sidebar-logo" href="../lazy_static/index.html"><div class="logo-container"><img class="rust-logo" src="../rust-logo.svg" alt="logo"></div></a><div class="sidebar-elems"><h2 class="location"><a href="index.html">In lazy_static</a></h2></div></nav><main><div class="width-limiter"><div class="sub-container"><a class="sub-logo-container" href="../lazy_static/index.html"><img class="rust-logo" src="../rust-logo.svg" alt="logo"></a><nav class="sub"><form class="search-form"><div class="search-container"><span></span><input class="search-input" name="search" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"><div id="help-button" title="help" tabindex="-1"><button type="button">?</button></div><div id="settings-menu" tabindex="-1"><a href="../settings.html" title="settings"><img width="22" height="22" alt="Change settings" src="../wheel.svg"></a></div></div></form></nav></div><section id="main-content" class="content"><div class="main-heading"><h1 class="fqn"><span class="in-band">Function <a href="index.html">lazy_static</a>::<wbr><a class="fn" href="#">initialize</a><button id="copy-path" onclick="copy_path(this)" title="Copy item path to clipboard"><img src="../clipboard.svg" width="19" height="18" alt="Copy item path"></button></span></h1><span class="out-of-band"><a class="srclink" href="../src/lazy_static/lib.rs.html#213-215">source</a> · <a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">[<span class="inner">&#x2212;</span>]</a></span></div><div class="docblock item-decl"><pre class="rust fn"><code>pub fn initialize&lt;T:&nbsp;<a class="trait" href="trait.LazyStatic.html" title="trait lazy_static::LazyStatic">LazyStatic</a>&gt;(lazy: <a class="primitive" href="https://doc.rust-lang.org/1.64.0/std/primitive.reference.html">&amp;</a>T)</code></pre></div><details class="rustdoc-toggle top-doc" open><summary class="hideme"><span>Expand description</span></summary><div class="docblock"><p>Takes a shared reference to a lazy static and initializes
it if it has not been already.</p>
<p>This can be used to control the initialization point of a lazy static.</p>
<p>Example:</p>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="attribute">#[<span class="ident">macro_use</span>]</span>
<span class="kw">extern</span> <span class="kw">crate</span> <span class="ident">lazy_static</span>;
<span class="macro">lazy_static!</span> {
<span class="kw">static</span> <span class="kw-2">ref</span> <span class="ident">BUFFER</span>: <span class="ident">Vec</span><span class="op">&lt;</span><span class="ident">u8</span><span class="op">&gt;</span> <span class="op">=</span> (<span class="number">0</span>..<span class="number">255</span>).<span class="ident">collect</span>();
}
<span class="kw">fn</span> <span class="ident">main</span>() {
<span class="ident">lazy_static::initialize</span>(<span class="kw-2">&amp;</span><span class="ident">BUFFER</span>);
<span class="comment">// ...</span>
<span class="ident">work_with_initialized_data</span>(<span class="kw-2">&amp;</span><span class="ident">BUFFER</span>);
}</code></pre></div>
</div></details></section></div></main><div id="rustdoc-vars" data-root-path="../" data-current-crate="lazy_static" data-themes="ayu,dark,light" data-resource-suffix="" data-rustdoc-version="1.64.0 (a55dd71d5 2022-09-19)" ></div></body></html>

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<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="A macro for declaring lazily evaluated statics."><meta name="keywords" content="rust, rustlang, rust-lang, lazy_static"><title>lazy_static - Rust</title><link rel="preload" as="font" type="font/woff2" crossorigin href="../SourceSerif4-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../FiraSans-Regular.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../FiraSans-Medium.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../SourceCodePro-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../SourceSerif4-Bold.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../SourceCodePro-Semibold.ttf.woff2"><link rel="stylesheet" type="text/css" href="../normalize.css"><link rel="stylesheet" type="text/css" href="../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" type="text/css" href="../ayu.css" disabled><link rel="stylesheet" type="text/css" href="../dark.css" disabled><link rel="stylesheet" type="text/css" href="../light.css" id="themeStyle"><script id="default-settings" ></script><script src="../storage.js"></script><script defer src="../crates.js"></script><script defer src="../main.js"></script><noscript><link rel="stylesheet" href="../noscript.css"></noscript><link rel="alternate icon" type="image/png" href="../favicon-16x16.png"><link rel="alternate icon" type="image/png" href="../favicon-32x32.png"><link rel="icon" type="image/svg+xml" href="../favicon.svg"></head><body class="rustdoc mod crate"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="mobile-topbar"><button class="sidebar-menu-toggle">&#9776;</button><a class="sidebar-logo" href="../lazy_static/index.html"><div class="logo-container"><img class="rust-logo" src="../rust-logo.svg" alt="logo"></div></a><h2 class="location"></h2></nav><nav class="sidebar"><a class="sidebar-logo" href="../lazy_static/index.html"><div class="logo-container"><img class="rust-logo" src="../rust-logo.svg" alt="logo"></div></a><h2 class="location"><a href="#">Crate lazy_static</a></h2><div class="sidebar-elems"><div class="block"><ul><li class="version">Version 1.4.0</li><li><a id="all-types" href="all.html">All Items</a></li></ul></div><section><div class="block"><ul><li><a href="#macros">Macros</a></li><li><a href="#traits">Traits</a></li><li><a href="#functions">Functions</a></li></ul></div></section></div></nav><main><div class="width-limiter"><div class="sub-container"><a class="sub-logo-container" href="../lazy_static/index.html"><img class="rust-logo" src="../rust-logo.svg" alt="logo"></a><nav class="sub"><form class="search-form"><div class="search-container"><span></span><input class="search-input" name="search" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"><div id="help-button" title="help" tabindex="-1"><button type="button">?</button></div><div id="settings-menu" tabindex="-1"><a href="../settings.html" title="settings"><img width="22" height="22" alt="Change settings" src="../wheel.svg"></a></div></div></form></nav></div><section id="main-content" class="content"><div class="main-heading"><h1 class="fqn"><span class="in-band">Crate <a class="mod" href="#">lazy_static</a><button id="copy-path" onclick="copy_path(this)" title="Copy item path to clipboard"><img src="../clipboard.svg" width="19" height="18" alt="Copy item path"></button></span></h1><span class="out-of-band"><a class="srclink" href="../src/lazy_static/lib.rs.html#8-215">source</a> · <a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">[<span class="inner">&#x2212;</span>]</a></span></div><details class="rustdoc-toggle top-doc" open><summary class="hideme"><span>Expand description</span></summary><div class="docblock"><p>A macro for declaring lazily evaluated statics.</p>
<p>Using this macro, it is possible to have <code>static</code>s that require code to be
executed at runtime in order to be initialized.
This includes anything requiring heap allocations, like vectors or hash maps,
as well as anything that requires function calls to be computed.</p>
<h2 id="syntax"><a href="#syntax">Syntax</a></h2>
<div class='information'><div class='tooltip ignore'>ⓘ</div></div><div class="example-wrap"><pre class="rust rust-example-rendered ignore"><code><span class="macro">lazy_static!</span> {
[<span class="kw">pub</span>] <span class="kw">static</span> <span class="kw-2">ref</span> <span class="ident">NAME_1</span>: <span class="ident">TYPE_1</span> <span class="op">=</span> <span class="ident">EXPR_1</span>;
[<span class="kw">pub</span>] <span class="kw">static</span> <span class="kw-2">ref</span> <span class="ident">NAME_2</span>: <span class="ident">TYPE_2</span> <span class="op">=</span> <span class="ident">EXPR_2</span>;
...
[<span class="kw">pub</span>] <span class="kw">static</span> <span class="kw-2">ref</span> <span class="ident">NAME_N</span>: <span class="ident">TYPE_N</span> <span class="op">=</span> <span class="ident">EXPR_N</span>;
}</code></pre></div>
<p>Attributes (including doc comments) are supported as well:</p>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="macro">lazy_static!</span> {
<span class="doccomment">/// This is an example for using doc comment attributes</span>
<span class="kw">static</span> <span class="kw-2">ref</span> <span class="ident">EXAMPLE</span>: <span class="ident">u8</span> <span class="op">=</span> <span class="number">42</span>;
}</code></pre></div>
<h2 id="semantics"><a href="#semantics">Semantics</a></h2>
<p>For a given <code>static ref NAME: TYPE = EXPR;</code>, the macro generates a unique type that
implements <code>Deref&lt;TYPE&gt;</code> and stores it in a static with name <code>NAME</code>. (Attributes end up
attaching to this type.)</p>
<p>On first deref, <code>EXPR</code> gets evaluated and stored internally, such that all further derefs
can return a reference to the same object. Note that this can lead to deadlocks
if you have multiple lazy statics that depend on each other in their initialization.</p>
<p>Apart from the lazy initialization, the resulting “static ref” variables
have generally the same properties as regular “static” variables:</p>
<ul>
<li>Any type in them needs to fulfill the <code>Sync</code> trait.</li>
<li>If the type has a destructor, then it will not run when the process exits.</li>
</ul>
<h2 id="example"><a href="#example">Example</a></h2>
<p>Using the macro:</p>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="attribute">#[<span class="ident">macro_use</span>]</span>
<span class="kw">extern</span> <span class="kw">crate</span> <span class="ident">lazy_static</span>;
<span class="kw">use</span> <span class="ident">std::collections::HashMap</span>;
<span class="macro">lazy_static!</span> {
<span class="kw">static</span> <span class="kw-2">ref</span> <span class="ident">HASHMAP</span>: <span class="ident">HashMap</span><span class="op">&lt;</span><span class="ident">u32</span>, <span class="kw-2">&amp;</span><span class="lifetime">&#39;static</span> <span class="ident">str</span><span class="op">&gt;</span> <span class="op">=</span> {
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">m</span> <span class="op">=</span> <span class="ident">HashMap::new</span>();
<span class="ident">m</span>.<span class="ident">insert</span>(<span class="number">0</span>, <span class="string">&quot;foo&quot;</span>);
<span class="ident">m</span>.<span class="ident">insert</span>(<span class="number">1</span>, <span class="string">&quot;bar&quot;</span>);
<span class="ident">m</span>.<span class="ident">insert</span>(<span class="number">2</span>, <span class="string">&quot;baz&quot;</span>);
<span class="ident">m</span>
};
<span class="kw">static</span> <span class="kw-2">ref</span> <span class="ident">COUNT</span>: <span class="ident">usize</span> <span class="op">=</span> <span class="ident">HASHMAP</span>.<span class="ident">len</span>();
<span class="kw">static</span> <span class="kw-2">ref</span> <span class="ident">NUMBER</span>: <span class="ident">u32</span> <span class="op">=</span> <span class="ident">times_two</span>(<span class="number">21</span>);
}
<span class="kw">fn</span> <span class="ident">times_two</span>(<span class="ident">n</span>: <span class="ident">u32</span>) -&gt; <span class="ident">u32</span> { <span class="ident">n</span> <span class="op">*</span> <span class="number">2</span> }
<span class="kw">fn</span> <span class="ident">main</span>() {
<span class="macro">println!</span>(<span class="string">&quot;The map has {} entries.&quot;</span>, <span class="kw-2">*</span><span class="ident">COUNT</span>);
<span class="macro">println!</span>(<span class="string">&quot;The entry for `0` is \&quot;{}\&quot;.&quot;</span>, <span class="ident">HASHMAP</span>.<span class="ident">get</span>(<span class="kw-2">&amp;</span><span class="number">0</span>).<span class="ident">unwrap</span>());
<span class="macro">println!</span>(<span class="string">&quot;A expensive calculation on a static results in: {}.&quot;</span>, <span class="kw-2">*</span><span class="ident">NUMBER</span>);
}</code></pre></div>
<h2 id="implementation-details"><a href="#implementation-details">Implementation details</a></h2>
<p>The <code>Deref</code> implementation uses a hidden static variable that is guarded by an atomic check on each access.</p>
<h2 id="cargo-features"><a href="#cargo-features">Cargo features</a></h2>
<p>This crate provides one cargo feature:</p>
<ul>
<li><code>spin_no_std</code>: This allows using this crate in a no-std environment, by depending on the standalone <code>spin</code> crate.</li>
</ul>
</div></details><h2 id="macros" class="small-section-header"><a href="#macros">Macros</a></h2><div class="item-table"><div class="item-row"><div class="item-left module-item"><a class="macro" href="macro.lazy_static.html" title="lazy_static::lazy_static macro">lazy_static</a></div><div class="item-right docblock-short"></div></div></div><h2 id="traits" class="small-section-header"><a href="#traits">Traits</a></h2><div class="item-table"><div class="item-row"><div class="item-left module-item"><a class="trait" href="trait.LazyStatic.html" title="lazy_static::LazyStatic trait">LazyStatic</a></div><div class="item-right docblock-short"><p>Support trait for enabling a few common operation on lazy static values.</p>
</div></div></div><h2 id="functions" class="small-section-header"><a href="#functions">Functions</a></h2><div class="item-table"><div class="item-row"><div class="item-left module-item"><a class="fn" href="fn.initialize.html" title="lazy_static::initialize fn">initialize</a></div><div class="item-right docblock-short"><p>Takes a shared reference to a lazy static and initializes
it if it has not been already.</p>
</div></div></div></section></div></main><div id="rustdoc-vars" data-root-path="../" data-current-crate="lazy_static" data-themes="ayu,dark,light" data-resource-suffix="" data-rustdoc-version="1.64.0 (a55dd71d5 2022-09-19)" ></div></body></html>

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<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="API documentation for the Rust `lazy_static` macro in crate `lazy_static`."><meta name="keywords" content="rust, rustlang, rust-lang, lazy_static"><title>lazy_static in lazy_static - Rust</title><link rel="preload" as="font" type="font/woff2" crossorigin href="../SourceSerif4-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../FiraSans-Regular.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../FiraSans-Medium.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../SourceCodePro-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../SourceSerif4-Bold.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../SourceCodePro-Semibold.ttf.woff2"><link rel="stylesheet" type="text/css" href="../normalize.css"><link rel="stylesheet" type="text/css" href="../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" type="text/css" href="../ayu.css" disabled><link rel="stylesheet" type="text/css" href="../dark.css" disabled><link rel="stylesheet" type="text/css" href="../light.css" id="themeStyle"><script id="default-settings" ></script><script src="../storage.js"></script><script defer src="sidebar-items.js"></script><script defer src="../main.js"></script><noscript><link rel="stylesheet" href="../noscript.css"></noscript><link rel="alternate icon" type="image/png" href="../favicon-16x16.png"><link rel="alternate icon" type="image/png" href="../favicon-32x32.png"><link rel="icon" type="image/svg+xml" href="../favicon.svg"></head><body class="rustdoc macro"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="mobile-topbar"><button class="sidebar-menu-toggle">&#9776;</button><a class="sidebar-logo" href="../lazy_static/index.html"><div class="logo-container"><img class="rust-logo" src="../rust-logo.svg" alt="logo"></div></a><h2 class="location"></h2></nav><nav class="sidebar"><a class="sidebar-logo" href="../lazy_static/index.html"><div class="logo-container"><img class="rust-logo" src="../rust-logo.svg" alt="logo"></div></a><div class="sidebar-elems"><h2 class="location"><a href="index.html">In lazy_static</a></h2></div></nav><main><div class="width-limiter"><div class="sub-container"><a class="sub-logo-container" href="../lazy_static/index.html"><img class="rust-logo" src="../rust-logo.svg" alt="logo"></a><nav class="sub"><form class="search-form"><div class="search-container"><span></span><input class="search-input" name="search" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"><div id="help-button" title="help" tabindex="-1"><button type="button">?</button></div><div id="settings-menu" tabindex="-1"><a href="../settings.html" title="settings"><img width="22" height="22" alt="Change settings" src="../wheel.svg"></a></div></div></form></nav></div><section id="main-content" class="content"><div class="main-heading"><h1 class="fqn"><span class="in-band">Macro <a href="index.html">lazy_static</a>::<wbr><a class="macro" href="#">lazy_static</a><button id="copy-path" onclick="copy_path(this)" title="Copy item path to clipboard"><img src="../clipboard.svg" width="19" height="18" alt="Copy item path"></button></span></h1><span class="out-of-band"><a class="srclink" href="../src/lazy_static/lib.rs.html#167-179">source</a> · <a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">[<span class="inner">&#x2212;</span>]</a></span></div><div class="docblock item-decl"><div class="example-wrap"><pre class="rust macro"><code><span class="macro">macro_rules!</span> <span class="ident">lazy_static</span> {
($(<span class="attribute">#[<span class="macro-nonterminal">$</span><span class="macro-nonterminal">attr</span>:<span class="ident">meta</span>]</span>)<span class="op">*</span> <span class="kw">static</span> <span class="kw-2">ref</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">N</span>:<span class="ident">ident</span> : <span class="macro-nonterminal">$</span><span class="macro-nonterminal">T</span>:<span class="ident">ty</span> <span class="op">=</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">e</span>:<span class="ident">expr</span>; $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">t</span>:<span class="ident">tt</span>)<span class="kw-2">*</span>) =&gt; { ... };
($(<span class="attribute">#[<span class="macro-nonterminal">$</span><span class="macro-nonterminal">attr</span>:<span class="ident">meta</span>]</span>)<span class="op">*</span> <span class="kw">pub</span> <span class="kw">static</span> <span class="kw-2">ref</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">N</span>:<span class="ident">ident</span> : <span class="macro-nonterminal">$</span><span class="macro-nonterminal">T</span>:<span class="ident">ty</span> <span class="op">=</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">e</span>:<span class="ident">expr</span>; $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">t</span>:<span class="ident">tt</span>)<span class="kw-2">*</span>) =&gt; { ... };
($(<span class="attribute">#[<span class="macro-nonterminal">$</span><span class="macro-nonterminal">attr</span>:<span class="ident">meta</span>]</span>)<span class="op">*</span> <span class="kw">pub</span> ($(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">vis</span>:<span class="ident">tt</span>)<span class="op">+</span>) <span class="kw">static</span> <span class="kw-2">ref</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">N</span>:<span class="ident">ident</span> : <span class="macro-nonterminal">$</span><span class="macro-nonterminal">T</span>:<span class="ident">ty</span> <span class="op">=</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">e</span>:<span class="ident">expr</span>; $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">t</span>:<span class="ident">tt</span>)<span class="kw-2">*</span>) =&gt; { ... };
() =&gt; { ... };
}</code></pre></div>
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window.SIDEBAR_ITEMS = {"fn":[["initialize","Takes a shared reference to a lazy static and initializes it if it has not been already."]],"macro":[["lazy_static",""]],"trait":[["LazyStatic","Support trait for enabling a few common operation on lazy static values."]]};

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<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="Support trait for enabling a few common operation on lazy static values."><meta name="keywords" content="rust, rustlang, rust-lang, LazyStatic"><title>LazyStatic in lazy_static - Rust</title><link rel="preload" as="font" type="font/woff2" crossorigin href="../SourceSerif4-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../FiraSans-Regular.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../FiraSans-Medium.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../SourceCodePro-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../SourceSerif4-Bold.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../SourceCodePro-Semibold.ttf.woff2"><link rel="stylesheet" type="text/css" href="../normalize.css"><link rel="stylesheet" type="text/css" href="../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" type="text/css" href="../ayu.css" disabled><link rel="stylesheet" type="text/css" href="../dark.css" disabled><link rel="stylesheet" type="text/css" href="../light.css" id="themeStyle"><script id="default-settings" ></script><script src="../storage.js"></script><script defer src="sidebar-items.js"></script><script defer src="../main.js"></script><noscript><link rel="stylesheet" href="../noscript.css"></noscript><link rel="alternate icon" type="image/png" href="../favicon-16x16.png"><link rel="alternate icon" type="image/png" href="../favicon-32x32.png"><link rel="icon" type="image/svg+xml" href="../favicon.svg"></head><body class="rustdoc trait"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="mobile-topbar"><button class="sidebar-menu-toggle">&#9776;</button><a class="sidebar-logo" href="../lazy_static/index.html"><div class="logo-container"><img class="rust-logo" src="../rust-logo.svg" alt="logo"></div></a><h2 class="location"></h2></nav><nav class="sidebar"><a class="sidebar-logo" href="../lazy_static/index.html"><div class="logo-container"><img class="rust-logo" src="../rust-logo.svg" alt="logo"></div></a><h2 class="location"><a href="#">LazyStatic</a></h2><div class="sidebar-elems"><section><div class="block"><h3 class="sidebar-title"><a href="#implementors">Implementors</a></h3></div></section><h2 class="location"><a href="index.html">In lazy_static</a></h2></div></nav><main><div class="width-limiter"><div class="sub-container"><a class="sub-logo-container" href="../lazy_static/index.html"><img class="rust-logo" src="../rust-logo.svg" alt="logo"></a><nav class="sub"><form class="search-form"><div class="search-container"><span></span><input class="search-input" name="search" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"><div id="help-button" title="help" tabindex="-1"><button type="button">?</button></div><div id="settings-menu" tabindex="-1"><a href="../settings.html" title="settings"><img width="22" height="22" alt="Change settings" src="../wheel.svg"></a></div></div></form></nav></div><section id="main-content" class="content"><div class="main-heading"><h1 class="fqn"><span class="in-band">Trait <a href="index.html">lazy_static</a>::<wbr><a class="trait" href="#">LazyStatic</a><button id="copy-path" onclick="copy_path(this)" title="Copy item path to clipboard"><img src="../clipboard.svg" width="19" height="18" alt="Copy item path"></button></span></h1><span class="out-of-band"><a class="srclink" href="../src/lazy_static/lib.rs.html#185-188">source</a> · <a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">[<span class="inner">&#x2212;</span>]</a></span></div><div class="docblock item-decl"><pre class="rust trait"><code>pub trait LazyStatic { }</code></pre></div><details class="rustdoc-toggle top-doc" open><summary class="hideme"><span>Expand description</span></summary><div class="docblock"><p>Support trait for enabling a few common operation on lazy static values.</p>
<p>This is implemented by each defined lazy static, and
used by the free functions in this crate.</p>
</div></details><h2 id="implementors" class="small-section-header">Implementors<a href="#implementors" class="anchor"></a></h2><div class="item-list" id="implementors-list"></div><script type="text/javascript" src="../implementors/lazy_static/trait.LazyStatic.js" data-ignore-extern-crates="" async></script></section></div></main><div id="rustdoc-vars" data-root-path="../" data-current-crate="lazy_static" data-themes="ayu,dark,light" data-resource-suffix="" data-rustdoc-version="1.64.0 (a55dd71d5 2022-09-19)" ></div></body></html>